Summary
At high salinities and high temperatures, the growth rate of Pterocladia was high, the tips of branch initials were dilated and holdfasts broadened. By the end of the fourth week bleaching of the whole plant was complete.
Under low salinities and low temperatures, the rate of vegetative growth was decreased, the cuticle was thin and food reserve was centrally accumulated in the cells.
Under high salinities and low temperatures, the rate of growth was greatly reduced and cells were devoid of food reserve. Defoliation of lateral branches was frequent.
Under low salinities and high temperatures, the rate of growht was rather high and cells were relatively large.
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Nasr, A.H., Mohsen, A.F. & Bekheet, I.A. Effect of salinity and temperature variations on Pterocladia capillacea. Hydrobiologia 27, 395–400 (1966). https://doi.org/10.1007/BF00042702
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DOI: https://doi.org/10.1007/BF00042702